A、In flight, not on ground.
B、In icing conditions only.
C、Normal heating in flight,low heating on ground.
答案：C
A、In flight, not on ground.
B、In icing conditions only.
C、Normal heating in flight,low heating on ground.
答案：C
A. By the 28 VDC NORM BUS.
B. By the 115 VAC NORM BUS.
C. By ±12 VDC through the ADF Receiver.
A. A warning on the oxygen control panel 21 VU.
B. The direct reading pressure gauge on the oxygen cylinder.
C. A yellow indicator.
A. ISA + 15℃ （59°F）
B. ISA + 30℃ （86°F）
C. ISA + 59℃ （138°F）
A. Switch over to the other channel.
B. Control goes to a fail-safe position.
C. The channel in control uses values from the other channel.
A. The MCDU.
B. The data loader.
C. The GSE.
A. Form APU fire panel.
B. Automatically.
C. Form external power panel.
A. From the cargo compartment only.
B. From the PTP only.
C. From the cargo compartment or from the PTP .
A. Directly from the master lever.
B. From the MASTER lever via the ECU.
C. From tne master lever via the EIU and the ECU.
A. Only on the ECAM STATUS page .
B. In the LAST LEG REPORT, the AVIONICS STATUS and the ECAM STATUS page .
C. Class 2 failures are only displayed in flight.
A. There is no hazard area.
B. There is a hazard area.
C. There is a hazard area but only if the power is set above idle.
